<template>
  <el-container class="home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/logo.jpg" alt />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体 -->
    <el-container>
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏 -->
        <el-menu
          :default-active="activePath"
          class="el-menu-vertical-demo"
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409eff"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
        >
          <!-- 一级菜单 -->
          <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="iconObject[item.id]"></i>
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 主页内容 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script type="text/ecmascript-6">
export default {
  name: "Home",
  data() {
    return {
      //左侧菜单数据
      menuList: [],
      iconObject: {
        "125": "iconfont icon-user",
        "103": "iconfont icon-tijikongjian",
        "101": "iconfont icon-shangpin",
        "102": "iconfont icon-danju",
        "145": "iconfont icon-baobiao"
      },
      isCollapse:false,
      activePath:""//默认左侧激活菜单
    };
  },
  components: {},
  created() {
    this.getMenusList();
    this.activePath = sessionStorage.getItem("activePath")
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("login");
    },
    async getMenusList() {
      //get返回promise
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.menuList = res.data
    },
    toggleCollapse(){
      //菜单折叠
      this.isCollapse = !this.isCollapse
    },
    saveNavState(activePath){
      //保存点击菜单index
      window.sessionStorage.setItem("activePath",activePath)
      this.activePath = activePath
    }
  }
};
</script>
<style lang="scss" scoped>
.home-container {
  height: 100%;
  .el-header {
    background: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    div {
      display: flex;
      align-items: center;
      img {
        width: 40px;
        height: 40px;
      }
      span {
        margin-left: 15px;
      }
    }
  }
  .el-aside {
    background: #333744;
    .toggle-button{
      background: #4a5064;
      font-size: 10px;
      line-height: 24px;
      color: #fff;
      text-align: center;
      letter-spacing: 3px;
      cursor: pointer;
    }
  }
  .el-main {
    background: #eaedf1;
  }
}
</style>
<style scoped>
.el-aside >>> .iconfont {
  margin-right: 10px;
}
.el-aside >>> .el-menu {
  border: none;
}
</style>
